morse-linux: init at 2.6 (#491563)

pkgs/by-name/mo/morse-linux/package.nix

@@ -0,0 +1,60 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitLab,
+  alsa-lib,
+  pulseaudio,
+  pkg-config,
+  xmlto,
+  docbook_xsl,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "morse";
+  version = "2.6";
+
+  src = fetchFromGitLab {
+    owner = "esr";
+    repo = "morse-classic";
+    tag = finalAttrs.version;
+    hash = "sha256-wk/Jcp2YWUlecV3OMELD6IWrlj3IC8kh0U4geMxG4fw=";
+  };
+
+  buildInputs = [
+    alsa-lib
+    pulseaudio
+  ];
+
+  nativeBuildInputs = [
+    pkg-config
+    xmlto
+    docbook_xsl
+  ];
+
+  postPatch = ''
+    substituteInPlace Makefile --replace-fail "xmlto" "xmlto --skip-validation"
+  '';
+
+  env.NIX_CFLAGS_COMPILE = "-std=gnu99";
+
+  installPhase = ''
+    runHook preInstall
+    install -Dm755 morse -t "$out/bin/"
+    install -Dm755 QSO -t "$out/bin/"
+    install -Dm644 morse.1 -t "$out/share/man/man1/"
+    install -Dm644 QSO.1 -t "$out/share/man/man1/"
+    runHook postInstall
+  '';
+
+  meta = {
+    description = "Training program about morse-code for aspiring radio hams";
+    homepage = "https://gitlab.com/esr/morse-classic";
+    license = lib.licenses.bsd2;
+    maintainers = with lib.maintainers; [
+      matthewcroughan
+      sarcasticadmin
+    ];
+    platforms = lib.platforms.linux;
+    mainProgram = "morse";
+  };
+})